Nut-lock.



No. 7l7,058. Patented has. 30, I902.

J. wALsH, 1R.

NUT LOCK.

\Application filed Mar. 26, 1902.) (No Model.)

WITNESSES IN VENTOH:

A 7TOBIVEY Nrith TENT FFICE.

JAMES IVALSH, JR., OF PHILADELPHIA, PENNSYLVANIA.

NUTPLOCK.

SPECIFICATION forming part of Letters Patent No. 717,058, dated December 30, 1902.

Application filed March 26, 1902- Serial No. 100,006. (No model.)

2'0 all whom, it may concern.-

Be it known that I, JAMES WALSH, Jr., a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Nut-Locks, of which the following is a specification.

The object of this invention is to provide an improved nut-lock that may be applied to bolts and nuts of every description.

The invention consists in the employment of a washer provided with projecting teeth which are so arranged on the washer as to constitute an effective locking device, as will hereinafter more fully appear.

In the drawings, Figure. l is a perspective view of my improved nut-lock. Fig. 2 is an edge View thereof. Fig. 3 is an edge view as seen at right angles to Fig. 2. Fig. 4 is a view of the device as in use.

A is a washer, which may be'constructed of steel or any suitable material. This washer is split, as at a, and the free ends a are bent slightly away from each other, so as to constitute a spring, as shown. The washer is provided with oppositely-disposed projecting teeth 64 which are arranged on a radial line will be seen that by applying this washer to a bolt 13, between the nut b thereon and the opposing surface O, and then screwing the nut home, the free ends a of the washer are brought together on the same plane, and the teeth a embed themselves in the opposing nut b and surface 0. After the nut has been screwed home, as above described, the nut and surface contact with the washer only at points on a radial line passing through the center of the washer A and bolt B. This I have found to constitute an eifective lock, as any movement of the bolt causes a rocking action of the nut b and Washer A upon the teeth a thereby embedding said teeth still deeper in the nut 19 and surface (1 and avoid ing any liability of the accidental unscrewing of the nut.

I claim--.

A nut-lock comprising a plane washer pro vided with two diametrically-opposite pairs of teeth whereof those of each pair are on the respective faces of the washer and directly opposite each other, said Washer being split on a radial line intersecting one of the pairs of teeth, substantially as described.

In testimony whereof I affiX my signature in presence of two witnesses.

JAMES WALSH, JR. Witnesses:

R. HARRY GAMBLE, ANDREW V. GROUPE. 

